Response: After Northern Tracker commits to a quest, place 1 progress token on each location in the staging area.

"What roads would any dare to tread, what safety would there be in quiet lands, or in the homes of simple men at night, if the Dúnedain were asleep, or were all gone into the grave?"
–Aragorn, The Fellowship of the Ring

Warden of Annúminas gets +1 for each enemy engaged with you.

Rangers passed at times beyond the hills, but they were few and did not stay. –The Fellowship of the Ring

Glorfindel can be played from your discard pile.

Action: Discard a card from your hand to ready Glorfindel. (Limit once per phase.)

"He is an Elf-lord of a house of princes."
–Gandalf, The Fellowship of the Ring

Response: After Rhovanion Outrider commits to the quest, place 1 progress on a location in the staging area. If that location is not explored by this effect, give Rhovanion Outrider +1 until the end of the phase.

Reduce the cost to play Item attachments on Descendant of Girion by 1.

–Glóin, The Fellowship of the Ring

Combat Action: Ready Háma. He gets +3 until the end of the phase. At the end of the phase, discard Háma. (Limit once per round.)

"I am the Doorward of Théoden," he said. "Háma is my name." –The Two Towers

While there is a hero in your discard pile, Prince Imrahil loses the ally card type and gain

"We must gather all of the strength that we can find.

-The Return of the King

Response: After Northern Tracker commits to a quest, place 1 progress token on each location in the staging area.

"What roads would any dare to tread, what safety would there be in quiet lands, or in the homes of simple men at night, if the Dúnedain were asleep, or were all gone into the grave?"
–Aragorn, The Fellowship of the Ring

While Elfhelm is ready, he gains:

Response: After your threat is raised as the result of questing unsuccessfully, or by an encounter or quest card effect, reduce your threat by 1.

"But my lord sends word that we must set ourselves in readiness: orders may come for a sudden move." –The Return of the King

Action: Discard Damrod from play to lower your threat by 1 for each enemy in the staging area.

Warden of Annúminas gets +1 for each enemy engaged with you.

Rangers passed at times beyond the hills, but they were few and did not stay. –The Fellowship of the Ring

Glorfindel can be played from your discard pile.

Action: Discard a card from your hand to ready Glorfindel. (Limit once per phase.)

"He is an Elf-lord of a house of princes."
–Gandalf, The Fellowship of the Ring

Response: After Rhovanion Outrider commits to the quest, place 1 progress on a location in the staging area. If that location is not explored by this effect, give Rhovanion Outrider +1 until the end of the phase.

Sentinel.

Response: After Jubayr exhausts to defend an attack, discard 1 facedown shadow card from a non-unique enemy. (Limit once per phase.)

While a side quest is in the victory display, Rider of Rohan does not exaust to quest.

"Who are you, and what are you doing in this land?" said the Rider, using the Common Speech of the West...
–The Two Towers

Reduce the cost to play Item attachments on Descendant of Girion by 1.

–Glóin, The Fellowship of the Ring

Ranged.

Response: After Derufin participates in an attack that destroys an enemy engaged with a player, discard Derufin to reduce the engaged player's threat by X, where X is the destroyed enemy's printed .

Response: After Knight of Belfalas enters play, return a Gondor ally from your discard pile to your hand.

The mounted knights returned, and at their rear the banner of Dol Amroth...
–The Return of the King

Combat Action: Ready Háma. He gets +3 until the end of the phase. At the end of the phase, discard Háma. (Limit once per round.)

"I am the Doorward of Théoden," he said. "Háma is my name." –The Two Towers

While there is a hero in your discard pile, Prince Imrahil loses the ally card type and gains the hero card type.

"We must gather all of the strength that we can find.
–The Return of the King